8. "If we're talking about practical utility/purpose, then none of the" In response to In response to 0
rules/customs for formal fashion are logical. But for something like this, my guess is it goes back to the history of suits from centuries ago - probably something to do with riding horses while wearing a suit needing the bottom button open. I know that the custom of vents in suit jackets came from horse riding so I'm just guessing on the buttons.